hydrogenchloride; water T=120°C; 3 h; Sealed tube;

hydrogen; palladium on activated charcoal in ethanol T=20°C; P=750.06 Torr; 3 h;

aluminium trifluoromethanesulphonate; 1,1,1,3,3,3-hexamethyl-disilazane T=80°C; 2 h; Solvent-free conditions;

1: 1.) BuLi / 1.) THF, -78 deg C, 30 min, 2.) THF, -78 deg C, 1 h 2: tetrahydrofuran; acetic acid / 3 h / Ambient temperature 3: 77 percent / H2 / Pd/C / ethanol / 3 h / 20 °C / 750.06 Torr View Scheme